On Friday 28 January 2005 20:20, Timothy Miller wrote:
> The X server is, by definition, a priveleged process.  You should be
> able to trust it to behave correctly and protect the hardware from
> errant X clients.

IMHO, this is not the real security issue.
The real one reads: you should be able to *not* trust the X server for 
everything and use the hardware to protect the computer from the X server. Of 
course, this is not possible wrt to the X display (it _is_ managed by the X 
server so...). But is should be wrt to, e.g., the memory, the PCI bus, the 
interruptions, the monitor protection, or even the _console_ text display...

Once upon a time, it was rumored that some boards could be used to solder your 
motherboard... (Of course this was not true.) But what do you think: it was a 
good hacker or a bad hardware or... both?

Rodolphe, security office for a living... ;-)
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